An analysis of the gravitational waves from this event infers their intrinsic strength.
They could already tell how far away the collision happened, but LIGOs twin detectors could only narrow the direction of origin down to a vast ring in Earth’s sky — they couldn’t tell where the signal was coming from.
“That’s very important to us,” says LIGO physicist Jolien Creighton of the University of Wisconsin-Milwaukee.
With a large statistical sample of gravitational wave events of all types, the current range of values for the age will narrow. Although both the CMBR and the galaxy measurements are each quite precise, they seem to disagree with each other at roughly the ten percent level.
This disagreement could just be observational error, but some astronomers suspect it might be a real difference reflecting something currently missing from our picture of the cosmic expansion process, perhaps connected with the fact that the CMBR arises from a vastly different epoch of cosmic time than does the galaxy data.
NASA and ESA from at least five sources during the past two years offers spectacular confirmation of Einstein’s model of gravity and space-time.
Modeling of these events has also provided information on massive star formation, gamma-ray bursts, characteristics, and (for the first time) verification of theoretical ideas about how the very heavy elements, like gold, are produced.“That brought the area it could have been from about 1,000 square degrees in the sky down to about 60 square degrees.” For perspective, the moon covers less than one square degree of Earth’s sky.With this latest gravitational wave, computers picked up on the signal less than a minute after it arrived at Earth.Italy’s version of LIGO — called Virgo — came online Aug. And it took just two weeks for the Italian gravitational wave detector to prove its worth.The research was published online in the journal On Aug.And 25 telescopes — everything from gamma and x-ray telescopes to neutrino observatories — then looked to see if they could see any light from these colliding black holes.